Pinhole Camera

Q.

What type of image is formed by the pinhole camera?

1. Both A and B

2. Inverted

3. Virtual

4. Real

Q.

What are the disadvantages of a pinhole camera?

Q.

What is rectilinear propagation of light?

Q. The image formed in a pinhole camera is inverted. Why?

1. Light travels at very high speed.
2. Light travels in a straight line.
3. Light can undergo reflection.
4. Light can undergo refraction.

Q. An image formed in a pinhole camera is erect.

1. Because of the high speed of light
2. Because of the rectilinear propagation of light.

Q.

When you increase the size of the hole in a pinhole camera, the image becomes______.

Q.

The image formed by a pinhole camera is

1. Inverted

2. Diminished in size

3. Real

4. All of these

Q. A pinhole camera produces image because of the propagation of light.

1. real-inverted
2. rectilinear
3. curvilinear
4. virtual-erect

Q.

Why cannot we see an upside down image of the sun through the pinhole camera?

1. Light travels in straight line.

2. Sun is spherical in shape.

3. Sun is too bright.

4. A pinhole camera can only make point size images.

Q.

Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colors of the shirts in the image?

Q. A pinhole camera uses a mirror to form an inverted image.

1. True
2. False

Q. A pinhole camera uses a mirror to form an inverted image.

1. False
2. True

Q.

You have three opaque strips with very small holes of different shapes as shown in the figure. If you obtain an image of the sun on a wall through these holes, will the image formed by these holes be the same or different?

Q.

Explain the characheteristics of the image formed by a pin-hole camera.

Q. Match column I with column II and select the correct option from the given codes.

Column I	Column II
(a) Shadow of the moon	(i) Reflection
(b) Pinhole camera	(ii) Solar eclipse
(c) Full moon day	(iii) Inverted image
(d) Bouncing back	(iv) Lunar eclipse of light

1. (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
2. (a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)
3. (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)
4. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

Q. On a bright sunny day, Shaunak observed the sun through a small hole made in a sheet of foil. The image obtained seemed to be upright. What could be the reason for this?

1. Sun provides light to Earth
2. Sun is spherical in shape
3. Sun is a star
4. Sun produces heat

Q.

Why cannot we see an upside-down image of a ball through the pinhole camera?

1. None of these

2. Pinhole camera can only make point size image

3. Object like sun which is infinite in size, forms point sized or highly diminished image.

4. Sun is circular in shape, it doesn't affect

Q. What is a pin-hole camera? Explain how an image is formed in a pin-hole camera.

Q.

On which principle does a pinhole camera work?

Q. A pinhole camera produces image because of the propagation of light.

1. curvilinear
2. rectilinear
3. virtual-erect
4. real-inverted